Development of Porous Hybrid Materials and Their Applications to Sorption, Separation and Catalysis

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Development of Porous Hybrid Materials and Their Applications to Sorption, Separation and Catalysis

 

Jong-San Chang

 

Research Group for Nanocatalysts (RCN), Korea Research Institute of Chemical Technology (KRICT), P.O. Box, 107, Yusung, Daejeon 305-600, Korea

 

Main research in RGN (Research Group for Nanocatalysts) in KRICT has focused on the development of nanocatalysts and nanoporous materials including porous hybrids, so-called metal-organic frameworks (MOFs) and zeolites as well as green and sustainable chemistry including catalysis for biorefinery. This presentation will first focus on a main subject, entitled “porous metal carboxylates as multifunctional adsorbents and catalysts”. Then, the presentation will also cover a brief introduction to current research on the RGN including the defunctionalization of biomass-derived chemicals by heterogeneous catalysts.

 

Porous Metal Organic Frameworks (MOFs) are currently an important class of advanced functional materials due to their novel coordination structure, relatively facile preparation, special properties and potential practical applications. Among MOFs, the crystalline iron(III) trimesate MIL-100(Fe) and chromium(III) terephthalate MIL-101(Cr) with a zeolite MTN topology has a three-dimensional cubic structure with two types of mesocages (25-29 Å, 29-34 Å) accessible through microporous windows (5-9 Å, 12-16 Å) and very high BET surface areas (> 2200 m2.g-1, > 4000 m2.g-1). These solids have originally discovered by G. Ferey and C. Serre, Institute of Lavoisier, CNRS and University of Versaille, France. They possess several unprecedented features such as hierarchical pore structures including a zeotype architecture, mesoporous cages accessible through microporous windows, an exceptionally high cell volume and surface area, numerous unsaturated metal Lewis acid sites, and high hydrothermal and chemical stability. Because of these unique characteristics, these topical MOFs have been subjected to many investigations concerning surface functionalization, catalysis, selective gas sorption, drug carrier, energy-efficient dehumidification and adsorption heat transformation. In this presentation, I will show that these topical MOFs would be very attractive candidates for several important applications such as selective nitrogen capture for liquefaction of natural gas, selective acetylene capture, gas separation, energy-efficient water sorption chiller, and catalysis.

 

salle E012 - ENS - 24 rue Lhomond

Mardi 13 Juin 2017 14:30
Prof. CHANG Jong-San
Séminaire Thématique
Unité de rattachement: 
FRE IMAP 2000